At the Puget Sound Navy Yard, Bremerton, Washington, 17 March 1921. Helori was the only Section Patrol boat on the Pacific Coast fitted with the 220 horsepower Standard gasoline engine adopted for use in World War I submarine chasers (SC). She was used by the 13th Naval District for training subchaser engine room forces. Collection of Rear Admiral Ammen Farenholt, USN (Medical Corps). U.S. Naval History and Heritage Command Photograph.